Crank case and bearing for explosive-engines.



' lATENTEDJULY 23, 1907.

H; comm. 7 CRANK CASE AND BEARING FOR 'EXPLOSIVE ENGINES.

PPLIdATION FILED MAY 7, 1 9 06.

W F F 0 c .HOW/i R D UNiTED ST- XTEg earns-T ori ron.

HOWARD E. COFFIN, OF LANSING, MICHIGAN, ASSIGNOR TO OLDS MOTOR WORKS, OF

LANSING, MICHIGA- A CORPORATION OF MICHIGAN.

Specifieationiof Letters Patent.

Patented July 23, 1907.

Application iilsd may 7. 1906. Serial No. 815.480

To alt whom it may concern:

Be it known that I, Howann Corrnr, a citizen of the United States of America, re. .ing at Lansing, in the county of Ingham and State of Michigan, have invented certain new and useful Improvements in (Frank Cases and Bearings for Explosion-Engines, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to explosion engines of the tworycle type in which the explosive charge is compressed inthe crank casing before being introduced into the (-ylinder.

it is the object of the invention to obtain a construetion of bearing for the cran sir-aft which is capa ble of adjustment to take up the wear, and which forms a gas-tight connection with the easing for preventing escape of the compressed charge.

In the drawings, Figure 1 is a vert a-l section, in the plane of the crank shaft, through a. port ion of the crank casing and bearing: and Fig. 2 is a sectional elevation at right angles to Fig. 1 looking from inside the case. I

The crank casing is preferably formed of two sections, A B, which adjoin each other in the horizontal plane of the crank shaft C. One of these sections, preferably the upper section A, has formed integral therewith the part bearing D for the shalt, which projeets outward from the outer wall E on the casing. F is a. Complementary portion of the bearing, which is formed separate from thelower member B of the easing and is secured to the upper bearing D by suitable ]l10ltIlS,SllCll. as the bells G and clamping nuts 11. Beth portions of the hearing are preferably provided with bushings a I), which bear directly upon the shaft, and the space between the bearings at the sides is filled with shims 6, so as to form a tight joint.

The lower portion B of the casing is formed to make a. tight joint with the upper section A, and adjacent to the bearing F the outer wall is curved to lit around said bearing. This ('urved bearing is provided with a groove 1, in which is placed a suitable resilient paeking material J which is compressed against the outer face of the bearing F, and thus forms a tight joint to prevent leakage of the explosive charge.

As the bearing F is separate from the casing B, it is llili('ll less dillicult to [it up the latter so as to form a tight joint than where the bearing is integral therewith: furthermore. as the bearing wears. this wen-r may be taken up y the adjustment oi the member F, and a gas-tight joint is maintained by reason of the resilieney of the parking .l. which will expand to maintain contact with the enter lace oi the bearing.

What. l Chtilll as my invention i.-:

l. in a rrank ease lnn'lllllg for an explosion engi ne the vombinniion with a hor oniallv divided crank adapted for the holding oi an explosive charge therein. of a bearing for the (rank hal't inn one sorlion thereof formed integral with said t'i'nllk i' n and the other see lion separate therefrom and soeured thereto. and inn between the separate section and the easing.

2. in a crank ease benlin! for an vxplosimi ellgini the Combination with a hor ontally divided crank easing adapted for the holding of n explosive charge therein. of a seetionni bearing for the i'rank shalt havin: one section thereof formed integral with said easing. and an adjustable section separate from and seemed to said 0 "ng. and means for packing the joint between said adjusmhle see tion and casing: in different positions of adjustment of the former.

5- in a crank vase hearing for an explosion engine the combination with a horizontally divided crank easing adapted for the holding otan explosive eharg therein. ot' a bearing for the ernnk shaft having a sevlion thereof formed integral with said casing. and an adjustable sew tion separate from ainLsei-nred to said easing. and a resilient poi-kiln. between said ad istahle soriion and the easing.

4. in a crank case beari for an explosion IllL'illl. n sertionnl crank easing adapted for the holding of an explosive rhareo therein. the sections adjoining oar-h other in the plane of the erauk shall. a sectional boarin; for said rrnuk shaft havirn. one set-lion ihoreol illl1 'l2ll with one si-i-tion of said casing and swim-d Io said llll Q'lHl bearing section. and an adjustable section sepnl'nle from the easinn. and a parking; lu-iwoon said adjustable Sit'lii ll and rho easing.

in testimony win-root l nllix my signature in p|'i- 'i-ll 'i of two witnesses.

CHAS. l. MlLLl-dl.

easing.

a, park 

